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SubjectRe: [PATCH] x86: also disable FSRM if ERMS is disabled
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On 04. 01. 23, 12:39, Borislav Petkov wrote:
> On Wed, Jan 04, 2023 at 08:43:51AM +0100, Jiri Slaby wrote:
>> Let me resurrect this thread... Our customer has an AMD CPU which has indeed
>> both capabilities under normal circumstances. But they have a cool UEFI BIOS
>> too. They say:
>>
>> """
>> In AMD platform, while disalbe ERMS(Enhanced Rep MOVSB/STOSB) in UEFI
>> (system setup -> processor -> Enhanced Rep MOVSB/STOSB), the OS can't boot
>> normally.
>
> Any particular reason they're disabling ERMS?

Just so you know (I see you progressed with Ingo to fix this) -- despite
I asked the very same question, I received no answer quite yet. I
suppose it will sound like usual "because we can".

> What do they set FSRM to?

I suppose they keep it "enabled".

thanks,
--
js
suse labs

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